Obama and Clinton want to build a legacy by being the ones to solve this dispute (whatever the cost). Bill Clinton twisted the Israeli arm in order to get an unfair deal and almost succeeded (Oslo Accords). The deal failed only because stupid Arafat thought that his terrorism is working and Israelis are losing heart and giving concessions out of fear.
Clinton's grand standing and arm twisting got poor Yitzhak Rabin killed.
Rabin gave in to every demand Bill Clinton made on the behalf of Arafat. Bloody Arafat did not even understand English. He just kept demanding, Clinton keep agreeing, assuming that if they agreed to everything and signed a piece of paper, the Arab vs Jews dispute will be solved. Then he forced Rabin to sign on everything Clinton already promised to Arafat. Rabin signed on it, and at the same time he signed his own death warrant.
The nationalists in Israel saw it as Rabin selling out Israel. He was assassinated for what he did.
Now once again Democrats are in power and once again they are trying to force Israel into making concessions. Fortunately this time Netanyahu is in power, otherwise it could go worse than 1995. Seeing Netanyahu as hurdle, they want a regime change who can cave into the demands.